| Some definitions of interest. |
|
assert | Def b == if b True else False fi |
| | Thm* b: . b Prop |
|
nat | Def == {i: | 0 i } |
| | Thm* Type |
| | Thm* S |
|
le | Def A B == B<A |
| | Thm* i,j: . (i j) Prop |
|
nnsub | Def nnsub(m;n) == if m< n then 0 else m-n fi |
| | Thm* m,n: . nnsub(m;n)  |
|
lt_int | Def i< j == if i<j true ; false fi |
| | Thm* i,j: . (i< j)  |
|
not | Def A == A  False |
| | Thm* A:Prop. ( A) Prop |